lindell / JsBarcode

// https://en.wikipedia.org/wiki/MSI_Barcode#Character_set_and_binary_lookup

import Barcode from "../Barcode.js";

class MSI extends Barcode{

	encode(){

		// Start bits

		var ret = "110";

		for(var i = 0; i < this.data.length; i++){

			// Convert the character to binary (always 4 binary digits)

			var digit = parseInt(this.data[i]);

			var bin = digit.toString(2);

			bin = addZeroes(bin, 4 - bin.length);

			// Add 100 for every zero and 110 for every 1

			for(var b = 0; b < bin.length; b++){

				ret += bin[b] == "0" ? "100" : "110";

			}

		}

		// End bits

		ret += "1001";

		return {

			data: ret,

			text: this.text

		};

	}

	valid(){

		return this.data.search(/^[0-9]+$/) !== -1;

	}

}

function addZeroes(number, n){

	for(var i = 0; i < n; i++){

		number = "0" + number;

	}

	return number;

}

export default MSI;